155151940501 has 4 divisors (see below), whose sum is σ = 155152868332. Its totient is φ = 155151012672.

The previous prime is 155151940483. The next prime is 155151940519. The reversal of 155151940501 is 105049151551.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 105049151551 = 17939 ⋅5855909.

It is an interprime number because it is at equal distance from previous prime (155151940483) and next prime (155151940519).

It can be written as a sum of positive squares in 2 ways, for example, as 22965887025 + 132186053476 = 151545^2 + 363574^2 .

It is a cyclic number.

It is not a de Polignac number, because 155151940501 - 2¹¹ = 155151938453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155151940561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135666 + ... + 573331.

It is an arithmetic number, because the mean of its divisors is an integer number (38788217083).

Almost surely, 2^155151940501 is an apocalyptic number.

It is an amenable number.

155151940501 is a deficient number, since it is larger than the sum of its proper divisors (927831).

155151940501 is an equidigital number, since it uses as much as digits as its factorization.

155151940501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927830.

The product of its (nonzero) digits is 22500, while the sum is 37.

The spelling of 155151940501 in words is "one hundred fifty-five billion, one hundred fifty-one million, nine hundred forty thousand, five hundred one".