151207661 has 4 divisors (see below), whose sum is σ = 164953824. Its totient is φ = 137461500.

The previous prime is 151207649. The next prime is 151207691. The reversal of 151207661 is 166702151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 151207661 - 2¹⁰ = 151206637 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 (151207691) 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, 6873065 + ... + 6873086.

It is an arithmetic number, because the mean of its divisors is an integer number (41238456).

Almost surely, 2^151207661 is an apocalyptic number.

151207661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

151207661 is a deficient number, since it is larger than the sum of its proper divisors (13746163).

151207661 is a wasteful number, since it uses less digits than its factorization.

151207661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13746162.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 151207661 is about 12296.6524306414. The cubic root of 151207661 is about 532.7513985557.

The spelling of 151207661 in words is "one hundred fifty-one million, two hundred seven thousand, six hundred sixty-one".