61572167732203 has 4 divisors (see below), whose sum is σ = 61714366734328. Its totient is φ = 61429968730080.

The previous prime is 61572167732177. The next prime is 61572167732213. The reversal of 61572167732203 is 30223776127516.

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 61572167732203 - 2²⁹ = 61571630861291 is a prime.

It is a super-2 number, since 2×61572167732203² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61572167732213) 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, 71099500413 + ... + 71099501278.

It is an arithmetic number, because the mean of its divisors is an integer number (15428591683582).

Almost surely, 2^{61572167732203} is an apocalyptic number.

61572167732203 is a deficient number, since it is larger than the sum of its proper divisors (142199002125).

61572167732203 is a wasteful number, since it uses less digits than its factorization.

61572167732203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142199002124.

The product of its (nonzero) digits is 4445280, while the sum is 52.

The spelling of 61572167732203 in words is "sixty-one trillion, five hundred seventy-two billion, one hundred sixty-seven million, seven hundred thirty-two thousand, two hundred three".