61016200312642 has 8 divisors (see below), whose sum is σ = 91615008401100. Its totient is φ = 30477864178944.

The previous prime is 61016200312621. The next prime is 61016200312667. The reversal of 61016200312642 is 24621300261016.

It can be written as a sum of positive squares in 2 ways, for example, as 55571076069201 + 5445124243441 = 7454601^2 + 2333479^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 61016200312598 and 61016200312607.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15117986167 + ... + 15117990202.

Almost surely, 2^{61016200312642} is an apocalyptic number.

61016200312642 is a deficient number, since it is larger than the sum of its proper divisors (30598808088458).

61016200312642 is a wasteful number, since it uses less digits than its factorization.

61016200312642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30235977380.

The product of its (nonzero) digits is 20736, while the sum is 34.

Adding to 61016200312642 its reverse (24621300261016), we get a palindrome (85637500573658).

The spelling of 61016200312642 in words is "sixty-one trillion, sixteen billion, two hundred million, three hundred twelve thousand, six hundred forty-two".