61535254645345 has 64 divisors (see below), whose sum is σ = 81449641082880. Its totient is φ = 44345853047808.

The previous prime is 61535254645261. The next prime is 61535254645357. The reversal of 61535254645345 is 54354645253516.

It is not a de Polignac number, because 61535254645345 - 2⁹ = 61535254644833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61535254645345.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6633093847 + ... + 6633103123.

It is an arithmetic number, because the mean of its divisors is an integer number (1272650641920).

Almost surely, 2^{61535254645345} is an apocalyptic number.

61535254645345 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61535254645345 is a deficient number, since it is larger than the sum of its proper divisors (19914386437535).

61535254645345 is a wasteful number, since it uses less digits than its factorization.

61535254645345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15394.

The product of its digits is 129600000, while the sum is 58.

The spelling of 61535254645345 in words is "sixty-one trillion, five hundred thirty-five billion, two hundred fifty-four million, six hundred forty-five thousand, three hundred forty-five".