32155551420031 has 4 divisors (see below), whose sum is σ = 34629055375432. Its totient is φ = 29682047464632.

The previous prime is 32155551419987. The next prime is 32155551420131. The reversal of 32155551420031 is 13002415555123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 32155551420031 - 2¹⁵ = 32155551387263 is a prime.

It is a super-2 number, since 2×32155551420031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32155551420131) 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, 1236751977681 + ... + 1236751977706.

It is an arithmetic number, because the mean of its divisors is an integer number (8657263843858).

Almost surely, 2^{32155551420031} is an apocalyptic number.

32155551420031 is a deficient number, since it is larger than the sum of its proper divisors (2473503955401).

32155551420031 is a wasteful number, since it uses less digits than its factorization.

32155551420031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2473503955400.

The product of its (nonzero) digits is 90000, while the sum is 37.

Adding to 32155551420031 its reverse (13002415555123), we get a palindrome (45157966975154).

The spelling of 32155551420031 in words is "thirty-two trillion, one hundred fifty-five billion, five hundred fifty-one million, four hundred twenty thousand, thirty-one".