155010040272820 has 24 divisors (see below), whose sum is σ = 325641336287904. Its totient is φ = 61981111020576.

The previous prime is 155010040272817. The next prime is 155010040272833. The reversal of 155010040272820 is 28272040010551.

It is a happy number.

It is a super-2 number, since 2×155010040272820² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155010040272820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1431512542 + ... + 1431620821.

It is an arithmetic number, because the mean of its divisors is an integer number (13568389011996).

Almost surely, 2^{155010040272820} is an apocalyptic number.

155010040272820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155010040272820 is an abundant number, since it is smaller than the sum of its proper divisors (170631296015084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155010040272820 is a wasteful number, since it uses less digits than its factorization.

155010040272820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2863136079 (or 2863136077 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 37.

The spelling of 155010040272820 in words is "one hundred fifty-five trillion, ten billion, forty million, two hundred seventy-two thousand, eight hundred twenty".